diff options
| author | Andreas Herrmann <andreas.herrmann3@amd.com> | 2008-06-20 22:08:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-24 13:05:59 +0200 |
| commit | 33af9039cbf629041da2bfa0cf451208391a1ec3 (patch) | |
| tree | 0efbb4b05d89d38acc006b6f74ee6053e867571c /arch/x86 | |
| parent | x86: pat.c introduce function to check for conflicts with existing memtypes (diff) | |
| download | linux-33af9039cbf629041da2bfa0cf451208391a1ec3.tar.xz linux-33af9039cbf629041da2bfa0cf451208391a1ec3.zip | |
x86: pat.c final cleanup of loop body in reserve_memtype
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Suresh B Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/pat.c | 30 |
1 files changed, 11 insertions, 19 deletions
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 281ac6489c08..a885a1019b8a 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -281,32 +281,24 @@ int reserve_memtype(u64 start, u64 end, unsigned long req_type, /* Search for existing mapping that overlaps the current range */ where = NULL; list_for_each_entry(entry, &memtype_list, nd) { - if (entry->start >= end) { + if (end <= entry->start) { where = entry->nd.prev; break; - } - - if (start <= entry->start && end >= entry->start) { + } else if (start <= entry->start) { /* end > entry->start */ err = chk_conflict(new, entry, new_type); - if (err) { - break; + if (!err) { + dprintk("Overlap at 0x%Lx-0x%Lx\n", + entry->start, entry->end); + where = entry->nd.prev; } - - dprintk("Overlap at 0x%Lx-0x%Lx\n", - entry->start, entry->end); - where = entry->nd.prev; break; - } - - if (start < entry->end) { + } else if (start < entry->end) { /* start > entry->start */ err = chk_conflict(new, entry, new_type); - if (err) { - break; + if (!err) { + dprintk("Overlap at 0x%Lx-0x%Lx\n", + entry->start, entry->end); + where = &entry->nd; } - - dprintk("Overlap at 0x%Lx-0x%Lx\n", - entry->start, entry->end); - where = &entry->nd; break; } } |